Cool, Are there any technical docs for how eventlet/greenlet work in PyPy,
>From my knowledge of greenlet its doing some pretty low level stuff that would >seem hard to mirror in PyPy. https://github.com/python-greenlet/greenlet/blob/master/greenlet.c#L9 And the very platform specific stack switching functions @ https://github.com/python-greenlet/greenlet/tree/master/platform It would seem like greenlet is pretty tightly coupled to the cpython and its functionality. I'd like to know how it can operate in pypy without major modifications, maybe u know of such a documentation that explains this. I'd be interested in reading that at least (maybe others would like to also). :-) -Josh ________________________________ From: Alex Gaynor [alex.gay...@gmail.com] Sent: Tuesday, September 10, 2013 8:18 AM To: OpenStack Development Mailing List Subject: Re: [openstack-dev] OpenStack + PyPy: Status and goals Hi Roman, Yes eventlet works well on PyPy, both Marconi and Swift use it. Alex On Mon, Sep 9, 2013 at 10:15 PM, Roman Podolyaka <rpodoly...@mirantis.com<mailto:rpodoly...@mirantis.com>> wrote: Hi Alex, That's really cool! I believe, performance is not the only benefit we can get from running OpenStack projects on PyPy. We can also improve the overall "correctness" of our code (as PyPy behaves differently with non-closed files, etc), just like compiling of your C/C++ app using different compilers can show hidden errors. And what about eventlet? Does it work well on PyPy? (as it is used in Nova, Neutron, etc) Thanks, Roman On Tue, Sep 10, 2013 at 12:28 AM, Alex Gaynor <alex.gay...@gmail.com<mailto:alex.gay...@gmail.com>> wrote: Hi all, Many of you have probably seen me send review requests in the last few weeks about adding PyPy support to various OpenStack projects. A few people were confused by these, so I wanted to fill everyone in on what I'm up to :) First, for those who aren't familiar with what PyPy is: PyPy is an implementation of the Python language which includes a high performance tracing just-in-time compiler and which is faster than CPython (the reference, and most widely deployed, implementation) on almost all workloads. The current status is: Two major projects work, both Marconi and Swift, Marconi is gating against PyPy already, Swift isn't yet since I needed to fix a few small PyPy bugs and those aren't in a release yet, expect it soon :) In terms of results, I've observed 30% performance improvements on GET workloads for Swift under PyPy vs. CPython (other workloads haven't been benchmarked tet). I believe the Marconi folks have also observed some performance wins, but I'll let them speak to that, I don't have the full details. Many python-clients projects are also working out of the box and gating: including novaclient, swiftclient, marconiclient, ceilometerclient, heatclient, and ironicclient! There's a few outstanding reviews to add PyPy gating for cinderclient, troveclient, and glanceclient. In terms of future direction: I'm going to continue to work on getting more projects running and gating against PyPy. Right now I'm focusing a lot of my attention on improving Swift performance, particularly under PyPy, but also under CPython. I'm hoping some day PyPy will be the default way to deploy OpenStack! If you're interested in getting your project running on PyPy, or looking at performance under it, please let me know, I'm always interested in helping! Thanks, Alex -- "I disapprove of what you say, but I will defend to the death your right to say it." -- Evelyn Beatrice Hall (summarizing Voltaire) "The people's good is the highest law." -- Cicero GPG Key fingerprint: 125F 5C67 DFE9 4084 _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org<mailto:OpenStack-dev@lists.openstack.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org<mailto:OpenStack-dev@lists.openstack.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- "I disapprove of what you say, but I will defend to the death your right to say it." -- Evelyn Beatrice Hall (summarizing Voltaire) "The people's good is the highest law." -- Cicero GPG Key fingerprint: 125F 5C67 DFE9 4084
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